Agenda: examen-senegal_en.txt

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1Atelier de Conception des Réseaux de Campus
2Dakar, Senegal
32 au 9 Avril, 2011
4
5EXAMEN
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81.) The recommendation for campus network routing/switching architecture is:
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10    a. To have one large subnet covering the entire campus and only route
11       between the Internet and the one campus subnet.
12    b. To have one subnet per reasonable sized building and route in the core
13       of your network.
14    c. To not route at all.
15
162.) The type of optical fiber that will provide service over the longest
17    distance is:
18
19    a. Multi Mode 62.5 micron OM1
20    b. Multi Mode 50 micron OM2
21    c. Multi Mode 50 micron OM3
22    d. Multi Mode 50 micron OM4
23    e. Single mode fiber G.652.D
24
253.) A campus networking best practices recommendation is to:
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27    a. Cascade switches as deep as required to reach the farthest building
28       on your campus
29    b. Build star networks to reduce the amount of cascading as much as
30       possible
31
324.) Can the member of one VLAN see the traffic from another VLAN even if the
33    VLANs are on the same physical switch?
34
35    a. Yes
36    b. No
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385.) Is it a good idea to use VLANs to extend the same IP network over multiple
39    building in your campus network?
40
41    a. Yes
42    b. No
43
44
45
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476.) When using OSPF among routers does:
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49    a. every router get designated as a DR (Designated Router) or BDR (Backup
50       Designated router)?
51    b. one router is the DR, one is the BDR and remaining routers maintain a
52       2-way state between themselves?
53    c. the Designated Router (DR) only share information with the BDR (Backup
54       Designated Router).
55
567.) What is Spanning Tree used for?
57
58    a. To create a diagram of the network topology
59    b. To prevent loops in a switched network
60    c. To update the routing table in a router
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628.) How can we avoid using static routes to reach all subnets in our
63    campus network?
64
65    a. Use BGP
66    b. Remove all subnets and build a flat layer 2 network
67    c. Use an IGP like OSPF or IS-IS
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699.) What does a "passive" interface do in a router with OSPF?
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71    a. It removes the interface's subnets from the OSPF database
72    b. It disables the interface
73    c. It prevents the router from becoming adjacent to another OSPF router
74       via that interface
75
7610.) What is the LOCAL_PREF attribute used for in BGP?
77
78     a. To influence the path taken by our egress (outgoing) traffic
79     b. To influence the selection of the designated router (DR)
80     c. To receive all incoming traffic through one router interface
81
8211.) Would it be OK to use a switch in your network core that does not support
83     SNMP?
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85     a. Yes
86     b. No
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9312.) What is the concept of baselining?
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95     a. Discovering the speed of every device in your network.
96     b. Discovering your network topology.
97     c. Collecting data about your network performance and activity for a
98        period of time to understand what is typical activity on your network.
99     d. Scanning servers on your network for viruses.
100     e. Determining how many servers and what operating systems are in use on 
101        your network.
102
10313.) Why is it important to understand what network traffic is leaving
104     (egress) your network?
105
106     a. It's not. As long as I have the capacity I don't need to worry about
107        what network traffic is coming from my network.
108     b. To be able to apply proper filtering and pro-actively block and fix
109        compromised machines on my network to act as a good network citizen,
110        and to avoid having your network, potentially, blacklisted by others.
111     c. To be able to use Netflow to draw pretty graphs of the data flowing
112        across my border routers.